MAX688 Maxim Integrated Products, MAX688 Datasheet
MAX688
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MAX688 Summary of contents
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... The MAX688 and MAX689 do not have an automatic shutdown function, and are identical except for their output voltages. Each device has an active-low shut- down-control input, used to turn its output on or off at any time ...
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... ABSOLUTE MAXIMUM RATINGS Input Supply Voltage IN to GND ............................................12V Terminal Voltages to GND PFO (MAX687) ........................................-0. PFO (MAX688/MAX689) ......................................-0.3V to 12V All Remaining Pins .....................................-0. PFO Sink Current ...............................................................10mA PFO Source Current (MAX687)...........................................10mA Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...
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... Shutdown Threshold Voltage V SD PFO Output Voltage High V OH PFO Output Voltage Low Threshold Voltage Input Leakage Current MAX688/MAX689: SHDN, PFO PFO Threshold Voltage V PFT PFO Hysteresis V SON SHDN Threshold Voltages V SSY V SSD SHDN Hysteresis SHDN Input Current PFO, SHDN Transient Rejection ...
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... LOAD 2 100mA LOAD 1 10mA LOAD 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 (V) IN OUT 4 _______________________________________________________________________________________ = +25°C, unless otherwise noted.) A MAX688 OUTPUT VOLTAGE DISTRIBUTION 3.32145 3.31920 3.31696 3.31472 3.31248 3.31024 3.30800 3.30576 3.30352 3.30128 3.29904 3.29679 3.29455 3.29231 3 ...
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... RIPPLE REJECTION vs. FREQUENCY 4.3V Min 20mA LOAD 3.6V Min 200mA LOAD 100 1k 10k 100k FREQUENCY (Hz) MAX687/MAX688 POWER-UP AND EXIT FROM SHUTDOWN V IN 5V/div V OUT 1V/div SHDN 5V/div 1ms/div I = 500mA LOAD 10nF V OUT 3.3V 10mV/div 500mA I LOAD 200mA/div 0mA 100 s/div 5 ...
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... PFO is low when SHDN is low (below 0.2V). Power-Fail Output. PFO trips when V 3 PFO sinks current in the MAX687, but is an open drain in the MAX688/MAX689. When shut down, PFO is always low and sinks current. Leave PFO open if not used. 4 GND ...
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... LOAD increase the ON pulse width. The 3.3V MAX688 and the 3.0V MAX689 incorporate the same PFO warning whenever V However, the MAX688/MAX689 do not automatically shut down when the output voltage drops even further. Instead, the SHDN input controls external shutdown. ...
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... PFO sources and sinks cur- OUT BASE rent in the MAX687, but is an open drain in the MAX688/MAX689 and only sinks current. When shut down, PFO is always low regardless of the voltage at OUT. Leave PFO open not used. Output Capacitor (C2) is 170mV below nomi- ...
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... Q1 +5V INPUT T1P42 Q2 2N4403 1k 10 BASE BLIM IN OUT C1 MAX688 220 F MAX689 SHDN PFO ON / OFF GND CC C3 10nF Figure 3. 4A Low-Dropout Circuit _______________________________________________________________________________________ High-Accuracy, Low-Dropout Linear Regulators DROPOUT VOLTAGE vs. LOAD CURRENT 1 ...
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High-Accuracy, Low-Dropout Linear Regulators Table 2a. Component Suppliers DEVICE MANUFACTURER CAPACITORS 267 series Matsuo F95 Tantalum series Nichicon 595 Tantalum series Sprague OS-CON series low-ESR organic Sanyo semiconductor LXF series United Chemi-Con BIPOLAR TRANSISTORS ZTX749 Zetex T1P42 Motorola 2N4403 Motorola ...
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... MAX688CPA 0°C to +70°C 8 Plastic DIP MAX688CSA 0°C to +70° MAX688CUA 0°C to +70°C 8 µMAX MAX688EPA -40°C to +85°C 8 Plastic DIP MAX688ESA -40°C to +85° MAX689CPA 0°C to +70°C 8 Plastic DIP MAX689CSA 0°C to +70° MAX689CUA 0°C to +70°C 8 µMAX MAX689EPA -40° ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...